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[¦fīv hī¦dräk·sē′trip·tə‚fan]
C11H12N2O3 Minute rods or needlelike crystals; the biological precursor of serotonin.



(also β-5-hydroxyindolyl-3-alanine), an amino acid. Two optically active forms and one racemic form exist for 5-hydroxytryptophan. In animals and man, L-5-hydroxytryptophan is produced as a result of the enzymatic hydroxylation of L-tryptophan during the conversion of L-tryp-tophan into the nervous-system mediator serotonin. When injected parenterally, 5-hydroxytryptophan has a hallucinogenic effect.

References in periodicals archive ?
A fairly new weight loss supplement that is gaining tremendous interest is 5HTP (5 Hydroxytryptophan).
Snooz'n consists of 100% natural ingredients, such as melatonin, tryptophan, 5HTP, GABA, Valerian root and other natural products.
com ) uses 100% natural ingredients, such as melatonin, tryptophan, 5HTP, GABA, Valerian root, and other natural products, which accelerate the onset of sleep naturally without the groggy after-effects often associated with traditional drug assisted sleep aids.
Now the question remains: Are the impurities responsible for the rise in EMS, or is the metabolite 5HTP responsible?
A SEROTONE 5HTP is a natural chemical made by the brain in the production of serotonin, which controls mood and sleep.
But now it may be possible to raise your serotonin levels naturally by taking a natural source of its pre-cursor called 5HTP.
Like 5HTP, tyrosine is available over the counter in this country.
The Company distributes 5HTP as its only dietary supplement; additionally the Company distributes Sanell(TM) hand sanitizer and Eyelieve(TM) sterile eye products.
Up until a few years ago when 5HTP encountered some obstacles relating to negative results published in a research report about "Peak X," it was a very successful product, he said.